A modern sliver of architecture in Roma.

Architectureal fantasy quarter of Rome.

A fairy tale castle in modern Rome.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

This small Roman arch was transformed into a dwelling by the founder of the Trinitarian Order.

2300-year-old Roman road connecting the empire.

Jesus' footprints and the first catacombs in the world.

Roman politician Herodes Atticus built this nymphaeum to honor his wife, whom he may have murdered.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

The famous winding walk at Chartres is surrounded in mystery and myth.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

Shattered columns and Egyptian pyramids outside of Paris.

You would never come across this tiny green oasis if you didn't know it existed.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

A piece of stonework relief commemorates the site where the Devil's rage, and odd apparel, destroyed a house.

Christ's blood allegedly preserved in a Belgian town.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.